Is definitely the twin-turbo Model in the 13B engine designed to ability the 3rd-era RX-7 introduced in late 1991. Each and every rotor on 13B-REW has a single combustion chamber volume of 654cc. With two rotors, the total displacement was 1308cc. Great suit for a Mazda swap or alternative job. https://rx7-engine67891.blogpixi.com/39210579/about-mazda-rx7-engine-for-sale